create sparql bookmark folders, sparql queries are created automatically,
and can be synchronized manually or automatically (with a cronjob).
If a query is changed, a new version of the object is created,
so older ones are not lost.

The Initial Owner of the Original Code is European Environment Agency (EEA).
All Rights Reserved.

The EEA Sparql (the Original Code) is free software;
you can redistribute it and/or modify it under the terms of the GNU
General Public License as published by the Free Software Foundation;
either version 2 of the License, or (at your option) any later
version.

Feature: improved the "SPARQL Schedule Status" control panel view - only the
unscheduled sparqls are displayed, and they can be restarted all at once (not
only individually). Also added a method which can be used to notify by e-mail
the development team about unqueued sparql queries.
[danielm-gh refs #31031]

Change: On preview use a LIMIT 10 to have faster response.
When a new resultset is too large don't store it's text version
for comparasion is it takes a lot of time, and blocks the instance
[szabozo0 #14826]